from django.template.loader import render_to_string
from django.core.urlresolvers import resolve
from django.test import TestCase
from django.http import HttpRequest
from lists.views import home_page
from lists.models import Item

class HomePageTest(TestCase):
    	
	def test_root_url_resolves_to_home_page_view(self):
		found = resolve('/')
		self.assertEqual(found.func,home_page)

	def test_home_page_returns_correct_html(self):
		request = HttpRequest()
		response = home_page(request)
		expected_html = render_to_string('home.html')
		self.assertEqual(response.content.decode(),expected_html)

	def test_home_page_can_save_a_POST_request(self):
         request = HttpRequest()
         request.method = 'POST'
         request.POST['item_text'] = 'A new list item'

         response = home_page(request)

		 self.assertEqual(Item.objects.count(), 1)
		 new_item = Item.objects.first()
		 self.assertEqual(new_item.text, 'A new list item')

         self.assertIn('A new list item',response.content.decode())
         expected_html = render_to_string(
		 	'home.html',
			{'new_item_text': 'A new list item'}
		 )
         self.assertEqual(response.content.decode(),expected_html)
 
class ItemModelTest(TestCase):
	def test_saving_and_retrieving_items(self):
		 first_item = Item()
		 first_item.text = 'The first (ever) list item'
		 first_item.save()

		 secend_item = Item()
		 secend_item.text = 'Item the second'
		 secend_item.save()

		 saved_items = Item.objects.all()
		 self.assertEqual(saved_items.count(), 2)

		 first_saved_item = saved_items[0]
		 second_saved_item = saved_items[1]
		 self.assertEqual(first_saved_item.text, 'The first (ever) list item')
		 self.assertEqual(second_saved_item.text, 'Item the second')